Bill Zahner is a member of faculty in the mathematics department at San Diego State University. His research, teaching, and service activities all focus on how we can improve mathematics learning for all students, especially English Learners and students from groups underrepresented in STEM fields. He enjoys teaching and working with students from across grade levels, from middle school all the way through graduate school. He earned his PhD in Education from UC Santa Cruz in 2011, where he was a fellow with the NSF-funded Center for the Mathematics Education of Latinos/as. Bill’s most recent research aims to design learning environments to foster productive and powerful discussions among linguistically diverse students in secondary mathematics. Prior to his life as a mathematics education researcher, he taught high school mathematics for six years. For three of those years he taught in Chuuk, Federated States of Micronesia.